Female scale. Brown to dark brown, elongate, high convex; exuvia apical. Male scale. white, approximately parallel sides, slightly convex.

Adult female. Body outline elongate, derm membranous. Cephalothorax. Antennae each with a long seta and a tubercle. Anterior spiracles each with a group of trilocular pores, some species also with pores near posterior spiracles. Pygidium. Pygidium rounded along posterior margin, with a series of serrate processes or plates, none of which are sclerotized enough to call lobes.In certain species, this processes or plates degenerate or invisible. Marginal gland spines occurring on the abdomen, each associated with 1 or more microducts. Gland tubercles present or absent, if present, near both anterior and posterior spiracles, others occurring submarginally of abdominal segments I–III. Ducts. Dorsal macroducts short, 2- barred, with the orifice surrounded by a sclerotized rim, forming obscure segmental rows in some species. Ventral microducts as large as or smaller than dorsal ducts. Anal opening situated on centre of pygidium. Perivulvar pores quinquelocular, present in an arc, sometimes divided into a median group and two lateral groups.

Palaearctic and Oriental regions.

Holotype: adult female: CHINA, Zhejiang Prov., Hangzhou City, Hangzhou botanical garden, 30°25'N, 120°12'E, 1.5.1982, Chou (NWAFU).

Paratypes: 7 adult females: same data as the holotype (NWAFU).

Adult female. Appearance in life not recorded. Slide-mounted adult female 552–617 μm long (holotype 598 μm long); 309-362 μm wide (holotype 337 μm wide), body outline oblong oval, with indistinct segmentation. Cephalothorax. Antennae each with a long seta and a tubercle. Anterior spiracles with 1-2 trilocular pores, pores absent from posterior spiracles. Pygidium marginal processes degenerate. Pygidial lobes absent, without paraphyses and plates. Marginal gland spines each 14-19 μm long, in 6 pairs on abdominal V-VIII, 1 pair on abdominal segments VII and VIII and 2 pairs on abdominal segments V and VI, each associated with 1 microduct; posteriormost median pair of gland spines widely separated. Gland tubercles absent. Dorsal macroducts forming obscure segmental rows and not obviously divided into marginal, submarginal and submedial groups, with about 17 on each side; without marginal dorsal macroducts at apex of pygidium between the posteriormost gland spines. Ventral microduct is smaller than dorsal macroduct, few, scattered on cephalothorqx and abdomen, with 4 or 5 near each anterior and posterior spiracles. Anal opening separated from apex of pygidium by a space about 82 μm long. Perivulvar pores present in an arc, divided in 5 groups, 4–7 median group, 5–8 anterolaterally, and 7–10 posterolaterally, 28–43 in total.

The new species is very close to Megacanthaspis phoebia (Tang, 1977) in having 6 pairs marginal gland spines. But differs in having (character-states on Megacanthaspis phoebia in brackets): (i) 2 pairs of gland spines on abdominal segments V and VI (only single on segments V & VI); (ii) marginal dorsal macroducts absent from apex of pygidium between median gland spines (present); (iii) gland tubercles absent (present).

Pleioblastus amarus (Poaceae).

Named after Hangzhou, the type locality.

China (Zhejiang).

Holotype: adult female: CHINA, Hainan Prov., Gaotuo mountain, 19.5.1963, Chou (NWAFU).

Paratypes: 12 adult females, same data as the holotype (NWAFU).

N=13. Adult female. Appearance in life was not recorded. Slide-mounted adult female 513–597 μm long (holotype 577 μm long); 199–209 μm wide (holotype 209 μm wide), body outline fusiform, with obscure segmentation. Cephalothorax. Antennae each with a long seta and a tubercle. Anterior spiracles each with 2–4 trilocular pores; pores absent from posterior spiracles. Pygidium with serrate process (plates) on abdominal segments VI-VIII, lobes absent, plates arranged 2, 3, 3 among the marginal gland spines, without paraphyses. Marginal gland spines each 9.93–18.9 μm long, in 5 pairs on abdominal IV-VIII, more or less enlarged, each associated with 2–4 microducts, median pair widely separated. Gland tubercles present on prothrax, metathrax and abdominal segment I-II, each with 1 microducts. Dorsal macroducts present on abdominal segments I-VIII; forming more or less segmental rows on abdominal segments I-VI, but scattered on abdominal segments VII-VIII; with a macroduct between median gland spines. Ventral macroducts 2-barred, as big as dorsal macroducts, scattered occurring on lateral body margin on prothorax, metathorax and abdominal segments I-IV. Ventral microducts present on prothorax, metathorax, segments I-IV. Anal opening about 68 μm long from apex. Perivulvar pores in an arc with a total of 13–25.

The new species is very similar to Megacanthaspis phoebia, but can be distinguished by by having (character-states on Megacanthaspis phoebia in brackets): (i) 5 pairs of marginal gland spines (6 pairs); (ii) a macroduct present medially between the median gland spines (absent).

Named after Hainan, the type locality.

China (Hainan).